I have two questions in regard to the Mind Smith Archetype.
1. Do you have to choose which of the 4 types of mind weapons (d4, d6, d8, or d10) when you take the archetype and are only able to use that specific version? The text is a bit unclear, and I can see it going either way.
"You gain a single melee weapon of your choosing, called a mind weapon. Your mind weapon is a martial melee weapon. The overall shape and design of your mind weapon can be of your choosing but it has one of the following four basic statistics:"
2. What is the bulk of each of the weapons or is it negligible? I don't see anything in the text that refers to the bulk (other than the mind smith's keepsake).