They are by far the best compact/sub-compact GLOCK barrel available on the Canadian Market... in my humble opinion.
I have three of these in 9mm and one in .40S&W. All are accurate, lock up tight, feed 100% and the finish is very tough.
IGB uses the same finish as GLOCK: "Tennifer". They don't use this finish in the U.S.A. as, from what I understand, the EPA doesn't allow it. Even the "U.S.A." marked GLOCKS have a different finish.... but... I digress
I have tried GLOCK barrels from Bar-Sto, Storm Lake, Lone Wolf and IGB (and the stock barrels on the larger guns). I think the chamber on all the barrels other than IGB is little too "match". IGB seems to be a little tighter than the stock GLOCK chamber (which is "scalloped" out on the bottom) but not nearly as tight as those match barrels from the States. You have to remember... American GLOCKS all come with the barrel...

In order for there to be any market for something like a stainless steel GLOCK barrel with broach cut rifling, it is going to have to be tighter than the factory barrel.
Here in Canada I think people just want something close to the factory barrel... something with a similar finish, works reliably, and doesn't stick out too much!
The IGB ramp seems to be polished and is relatively flat. I prefer this to the more concave ramp of the Lone Wolf barrels.
Anyway.... some pictures of a GLOCk 19 with 106mm IGB barrel:
IGB 117mm threaded barrel for GLOCK 19:
Installed on GLOCK 19 (top left):
Lone Wolf 106mm barrel after about 1 year of use: