I like the concept of moveable Velcro pockets. Depending on what level of Velcro they use it could last a long time or fail soon.
I would have to say that if from day one you set it up as you want your tools organized the any quality of Velcro should hold for a long long time.
Moving the pockets daily and using the strap as a tool belt... I don't think so, I as I see that Velcro failing too soon.
The price is right for even short term bag life (12-24 months) and my issue with most bags is they put pockets where they like them and then I have to adjust to how I have to organize and store tools.
So kudos to FastCap for making an adjustable bag.
The doctors bag at $500 is fine if I could tell them I want the pockets this size and in this order. To have to accept their placement at $500 is the painful part.
Now if Occidental Leather would send out a Dr. Wood® Tool Case that had Velcro pockets and you could make/configure it how you wanted and then send it back to them and they would build it as you wanted.... $500 -$600 would be way worth it.
I do think there is a place for adaptable tool belts...just today I needed Electrical tools on my belt at the top of a 8 foot step ladder, then I needed to move to screw gun and assorted screws, then move to assorted wire nails downs for Romex.
Cheers,
Stee