Hardhead said:Your Mounted Combat and Ride check protect the Mount.
Yes you are correct about that. However it has nothing to do with what I was talking about in what you quoted. Your wording was somewhat ambigious and I thought you might be suggesting that your character having mobility might protect the mount. Thus my comment.
Hardhead said:You may want Mobility to keep yourself from being whacked by AoOs when leaving threatened spaces to go charge another bad guy (depends on how combat seems to work out for you, and how your DM plays the bad guys).
In any case taking mobility for your self is probably not a good idea. If you are going any mounted combat route, your feats are pretty much spoken for until fairly high level, especially if you are not going pure fighter (wpn focus, wpn spec, mounted combat, power attack, cleave, ride by attack) and it gets worse if you go the archery route.
Making things worse is that as I mentioned in my first post, your mount is far, far more vulnerable than a fighter type is at anything past about 2nd lvl. So protecting your self at the expense of making the mount a better target is a bad idea. In my experience you actually would prefer to take as many hits as possible. At least if you have any desire to keep your mount alive. A griffon for example has about 59 hp and that's a 10th lvl cohort/mount which means most char with your typical charisma could not get it until 13-14th level. A fourteenth level Mage with a 13 con can have more HP than that.
Once you are past very low levels, the main difficulty in mounted combat is keeping the Mount alive, not yourself. You want them to be trying to kill you not your mount.
I do definitely agree with you on one thing at least, don't go for a mount unless you'll be spending most of your time travelling. Most mounts don't fit in the dungeon very well.