Noseless biners are useful for cleaning overhanging routes or routes that really wander.
Most of my trad draws are wire gate notched biners and I think they work fine for climbing in NB. All this low angle stuff makes it easy to clean. Certainly good enough to prevent me from replacing all of them with new gimmicky noseless wire gates...Like the Petzl ange. I got one just to see and it's nice, if you're climbing El cap in a day...Not that great for cragging.
For sport I have a set of Petzl spirit quickdraws.
I hate cleaning the last quickdraw of an overhanging route if it has a freakin notch in the biner.