Fair point, I will probably do that, as well as get a couple of other things checked at the local homebrew.
however, When looking.. it seems like few to no couplers have the open skirty thing than the A or M coupler(That is apparently why they are called "sliders"?)
I also didn't see any other taps with a skirty? bell-like covering over the actual connection. so, it maybe G.|
That gives me something to work off of.