I can't address the VP-X specifically, from memory. But some of the distribution boxes have one or more single-point-of-failure 'abilities' to take down an entire a/c electrical system. That's why I asked the question related to his total electrical failure. There have been multiple threads on the VAF forum and on the Aeroelectric forum about the issues.
Your airplane and your choice, and a lot of others have used them successfully. But...Most of those devices do a lot of fancy seeming stuff, like giving control of master, starting, A/B battery switching, flaps, trim, etc all within one box. The snag (in addition to the single-point-of-failure risk) is that if one section dies, every function controlled by the box is crippled when the box comes out for repair, until you can fix it. Can't fix it yourself? Then the a/c is crippled until you can ship the box off for repair. And if you've had the box for 10 years when it fails, will you be able to get it repaired? There are boxes out there now that are already orphaned; some by mfgrs that are still selling other models. There should be nothing about a fuse block and a handful of switches that can't be fixed by a typical homebuilder on the ramp at an unfamiliar airport with nothing but a meter & hand tools.
The kicker for me is that they cost a *lot* more than an ATC fuse holder & a handful of switches, and most of them still need switches for control.
Sorry for again wandering off topic for this thread (unless pantdino has one of those boxes).