Not had experience with terriers In any way but what you are after sounds a handy tool and I like bushes to kill,I have a beagle spaniel which I've had bits with but I can see your point about them being pushers rather than pushing and catching,,, had a rabbit ,tree rat,and well into double figures on duck n pheasant but...,,there's always a but.....if a pheasant is just hiding he won't grab it hell nose at it and it gets up and flys off but if there's one running through cover hell get that,I small gripe but does f m off at times,,,,rabbits can be the same,so watching this post to see what