Does Eidolon Reach(Ex) Evolution work with manufactured weapons?
Below is how I came to the conclusion that it does. Any comments on how I came to this conclusion are appreciated.
This post is mostly to try and flesh out how Reach(ex) for Eidolons actually works. These assumptions and reasoning are based from Pathfinder Unchained and obviously related to Advanced Player guide to a smaller extent. My goal is to get this information onto the FAQ.
First, I'm going to supply information directly from the Pathfinder Unchained. Then I will draw conclusions from this information. Then I will go into how reach works given these conclusions.
Conclusion: As we can see, Arms come come in pairs. These limbs don't grant natural attacks on their own. You must pick up the evolution claws or slam if they are not granted in the subtype or base form.
Conclusion: You need the limbs evolution for this. You get two claws per limbs evolution you apply this to.
Conclusion: Slam replaces both claw attacks and requires limbs evolution. Its agreed in general that unless a creature is using its body to slam, it is using both its limbs. It is implied in this evolution that Slam uses both limbs since it requires the limb evolution and replaces both claw attacks. If you also take a look at the Angel Subtype, it gets slam which would replace both it's claws.
Now lets take a look at evolutions and how specific they are when it comes to types of attacks.
Take a look at all of those evolutions. All of them are extremely specific on what they work with. There are many more that I didn't include but are just as specific, however I Included ones that specify Natural Attacks or a specific attack such or Bite. Keep note that Reach(Ex) has been printed in APG and Unchained. In the time between APG and Unchained the question of Reach working on manufactured has always been a question. It has neither been addressed in the FAQ and neither has it been changed between prints.
Conclusion: There is nothing that prevents the Reach(ex) evolution from working on your manufactured weapon attacks.
However there is one extremely glaring problem. In the APG FAQ there is this entry.
Summoner: If I choose the reach evolution for my eidolon, how many of its attacks gains increased reach?
The ability description says "pick one attack," not "pick one attack type." So if your eidolon has two claws and you pick "claw" for the reach evolution, only one claw gets increased reach. (The reach evolution is intended to let you emulate having a dragon-eidolon, as a dragon's bite attack has greater reach than its claws.)
You might try to argue given this FAQ that Reach(ex) will only work on one of your limbs, therefore you might be able to get reach with a one-handed weapon but not a two-handed weapon. However, please remember my entry on Slam above. Slam attack uses both of your limbs and there is nothing preventing you from applying Reach(ex) to a slam attack that uses two limbs.
Final Conclusion: Reach doesn't care if you use one limb or two limbs for the attack. It still gets reach. In all honesty I think, given the fact slam replaces both claws and still can have Reach(ex) added to it, that both claw attacks should also get reach.
In all honestly Reach(Ex) should be reworded. A few example I recommend are
Because in reality reach is just making your limbs or extremity longer to make the attack.
Otherwise reword it to be more specific to what it affects. Exclude weapons if its not intended, but it needs to be as specific as every other evolution that is also listed.
You might argue that this makes the Reach(ex) not as good for natural attackers as it does for weapon users. This is true, however weapon users are almost completely excluded from any of the other attack altering evolutions.
Thanks for reading. Any comments are appreciated. As mentioned earlier I just want this issue addressed.