I have received the pouch and with some work it will hold the X7501 while in its HTC leather case if I take the keyboard and put it in a sleeve in the main pouch. If should easily fit in the pouch without the HTC case still on it. The loop attaches to my belt OK and seems secure enough but it is positioned in the center of the pouch and the top leans away from my belt when the PDA is in it. Still, it is a bit better than using another hip pack to carry it which necessitates a 2nd belt around your waist.
The workmanship and leather are very good. I think that with use the leather will stretch some making insertion and removal of the PDA much easier.
Anyway, for $24.95 inc. shipping, you can't go far wrong.
Brad