I think this makes for a serviceable replacement to stacking HQ Interface and will be much more relevant once HQI cycles out.
You get the average access power of about 2 HQIs for only 5 credits and a single card. Plus 2 memory on a Criminal console is very nice.
Another noteworthy advantage of its card is its rock-bottom 1 influence cost, so is very easy to splash.
The biggest downside to the card is that it competes with many other great cards for the console slot. I think this card is great, but its another question entirely whether its worth having over other consoles.
Another consideration to make with this card is that it doesn't work with Gang Sign.
Overall I think The Gauntlet is a great card, if you can rationalise it over other consoles. It gives you a very simple method of multi-accessing HQ. Because your bypasses and derezzes in Criminal hurt your multi-access with this card I actually think it might be best played out of faction, maybe in a Shaper deck to supplement a focus on R&D pressure.