Yeah, number keys if I used them at all and I only ever bothered with Claymores since they were a set it and forget it thing. And since I would never be setting them in the middle of a firefight, I didn't need to get to them too quickly. At least not so much so that gaining fractions of a second over number keys made a difference.
Like I said, I just never really used them. I usually wouldn't have more than the default one flashbang or something except when I was leveling up and 3 was the most useful perk to use out of that grouping. I just really never needed them as I found myself quite capable of outplaying 90% of people without them (I probably use them more to finish people in last stand than anything else). Hell, I regularly played Team Deathmatch and would take out 2-3 guys at once quite easily if I was on my game. But one thing I noticed was that I played that (and most games really) far more aggressively than other players. I would often charge into rooms filled with enemies deliberately when most people were popping around corners taking pot shots, just so I could take out one or two, maybe get a grenade off, and leave them in such disarray that my team could pile in behind me and finish them off. There's nothing I love more than getting in my opponents face in an FPS, especially when it seems like a terrible idea.I also still stand by my tactical grenades assertion, they're just really important to a playstyle.