Do the aluminum grips get hot?
In regards to concealed carry. I carry AIWB with a Stealthgear. I live in Utah and work a desk job. So I haven't had them get hot or make it feel any hotter than wood grips.
In regards to shooting. Nope. If you leave it in the sun it may get toasty, but I've had it on my hip out shooting in the summer with my black aluminum grips and it hasn't been hot to the touch. Again, laying in direct sunlight in this summer will get the grips and frame warm, but I generally put my pistols and guns in cases or get covered when not being shot so they don't get unnecessary dust and dirt on them. That fine powdery dirt and dust we have in the summer is just unnecessary. Probably more info than you bargained for, but I hope it helps.