DNAXdiver once bubbled...
I just don't understand the DUI system. The gloves go semi-permanently on the suit, and there's no wrist seals. In the kind of diving I do, cold water wreck and cave, glove failure is always possible, and you really got to have a back up. Also, I find it useful to be able to pop off the glove without removing my suit, when I am all suited up and ready to go and an O-ring blows or a canister light bulb burns out and I need to be able to do some quick surgery without taking all my gear off.
I like the Sitech system. It's a little less fiddly than the DC, uses the same $7 blue fishermans gloves, and it fairy easy to get on and off. Wish it were a tad more rugged, but you can say that about any of them.
Oh, and the point of the tubes is not just to equalize the gloves - you and do that by leaving out the wrist seals or pulling your underwear cuff under them - the idea is to have a method of equalization that can be quickly defeated if necessary you can pull the tube out working through the glove or sleeve and isolate the leakage assuming of course you have wrist seals. Surgical rubber tubes are best but in a pinch (they are easily misplaced!) anything will do, soda straws, or bits of yarn or rope.