Howdy Bowser!
I'm one of those guys that straddles the fence. I'll ignore quite a few signals, but mostly based on sound rather than VDI numbers. In fact, I have a real bad habit of going after a signal based entirely on sound without bothering to look at the display hardly ever. I'm trying to be better about this, but still, I tend to key in on the sound of the target.

Now that I have an MXT Pro, I am even more sound oriented than before. I hear a tone that sounds decent, and I'll dig. If it sounds like foil, I'll try to put forth at least a minimal effort to see if I can uncover it for I.D. purposes, but if I can't, I'll dig it anyway just to verify. I recently got a nice necklace marked 14k that hit right at about 16 or 17, and wouldn't normally dig that signal, but it was just too hard a hit to ignore. In other words, it sounded real juicy.

I can understanding passing on certain VDI numbers, but that path can be fraught with peril, and one might miss some gold in the foil range. So I'll tend to verify my signal when it looks like foil. I don't like to miss any gold!

Blessings,
M-Taliesin