Thought this thread was about the VTAC and not about the downfall of the P320 and Cohen's SIG? The OP was asking about the VTAC and personal experiences, not the forums deliberation and verdict on the P320. Just sayin'
I was interested in the P320 X5 initially, but after shooting a few I've decided to just stick with the FS P320 9mm. Of the three available P320 X5 variants, the VTAC brings the least to the table.