I'd like to be able to go directly to someone's gallery(s) from their member page. I just went through the whole 5th gen gallery to see if someone had pictures (they didn't) and thought it would save a ton of time if I could check their member page and see if they had one or not.

Members would have to manually post a link in their own profile for this to work.

can that be done? I only see room for one url

In the signature area you can put as many urls as you want.