Weber rotisseries for your 22 inch grill anyone have one of these

Do you mean the rotisserie ring for the 22 inch kettle?

Yeah I've got one. Although I haven't used it in a while, they are useful.

I mainly use it for eye of round. Sliced super thin for roast beef and French dip sandwiches.

Also it's great for roasting a Turkey breast.

You can certainly use it spin whole turkeys, I've just never done it though.

Anyway, it's not gimmicky. It's a pretty good product.