It's a little sketchy, and I can see arguments for disallowing it, such as 'have you actually dismounted?'. I'm going to say yes, you are alongside, not on your mount, so I'd allow it. I wouldn't be surprised by or argue heavily against a GM who disallowed it.
@The Diplomat,
You have not dismounted, you must dismount before you can mount.
@dragonhunterq,
Nothing about the ride skill's cover ability indicates that the rider has dismounted.
Cover: You can react instantly to drop down and your mount, using it as cover. You can’t attack or cast spells while using your mount as cover. If you fail your Ride check, you don’t get the cover benefit. Using this option is an immediate action, but recovering from this position is a move action (no check required).
You are hanging from your mount, you have not dismounted.
|
@The Diplomat,
You have not dismounted, you must dismount before you can mount.
Fast Mount or Dismount: You can attempt to mount or dismount from a mount of up to one size category larger than yourself as a free action, provided that you still have a move action available that round.
Since fast mount/dismount is a free action (not a swift action), does this mean that, if he's hanging from the side of the horse, he could fast dismount and then fast mount (2x DC 20 checks) in the same round?
The Diplomat,
Technically yes, but it falls under the rule that GMs are may limit free actions per round. You may expect table variance as a GM may decide that dismounting and mounting in the same round is too much.
Note: I am not placing judgement on whether or not it is too much or not.