I wouldn't hesitate to use my Explorer for anything, it plays great and sounds great. You mentioned tuning stability, the stock Grover tuners are ok, I upgraded mine to the Planet Waves Trimlock tuners though as I just prefer locking tuners. The main issue I want to warn you about is the scale length that Gibson uses, 24.75", it won't be all that great for that low B string, there is a reason why generally every 7-string is 25.5" or longer. I know where you are coming from though, I wanted a Gibson Explorer since the first time I saw one and knew what it was when I started playing guitar. I finally got one years later and I wouldn't ever give it up for anything, so I know it's hard to hear anyone saying don't do it, but if the scale were at least 25.5" I would say definitely go for it. Otherwise, the only thing I can say is you really need to play one in person before you drop the cash, again 24.75" just isn't ideal for that low B.