It also comes with the "combat cut" option if you'd like a bit more grip exposed with less leather backing... some say there's a trade-off in comfort, but if you need better access, it is an option.
I have the CrossBreed SuperTuck Deluxe for my XD-40 service, and I couldn't be happier.
You might even try a 2:30 position, too, to accommodate your grip problem. Between location on the belt, height and cant adjustment I would think you will find a combination that works.
I second the "get a good gun belt" advise. It makes more difference that you might imagine - and they don't have to look tactical - or "tacti-cool" either.
XD-40 service, XD-9sc, member GeorgiaCarry.Org, National Rifle Association, Gun Owners of America, North American Hunting Club, Rocky Mountain Elk Foundation