Bart, I'm sure this isn't what you were thinking about when you started this thread, but I'll mention it anyway. On the 1st hole at Mountain Ridge the bunker style is consistent but the presentation is mixed with fescue framing two of the fairway bunkers...
Same thing at Somerset Hills #9...
In both instances, I think the "mix" works very well.
Also, at the Dormie Club there are spots where a "maintained" bunker flows into a waste bunker. Unfortunately, I don't have a picture showing an example. BUt the maintained bunker and the waste bunker have distinct styles and you can see where one ends and the other begins. Again, I think it works there.