I currently have a 110V20A GFCI outlet in my guest bathroom. It's the older type, with red and black buttons, and I'm planning to replace it with a new TR/WR GFCI receptacle as part of a general electrical maintenance and childproofing effort.
I cannot think of a single device that I have ever seen or owned that has a T-bladed plug for 20A draw, much less anything I would plug into a bathroom outlet. So, I currently see no reason to replace like-for-like, and as I have had some serious issues trying to plug things into 20A TR outlets (the shutter design is different in the ones I've seen, and requires not only that something be inserted on both sides, but that roughly equal pressure be applied to both sides) I'm leaning toward downgrading to 15A.
Can anyone think of anything you'd commonly find in your bathroom, that would plug into a countertop outlet and need 20A draw?
On the same note, are 15A GFCI outlets rated for 20A "pass-through", like normal 15A outlets are? "Pass-through" is particularly important for these, as they protect "downstream" devices, which could draw up to the full current rating of the entire circuit through the internal protection circuitry.
Lastly, I will probably at some point replace similar outlets in the kitchen (120V20A GFCI non-TR/WR). Same basic question; is there anything anyone can think of that would normally be found on a kitchen counter and would require 120V20A? Or when I replace these, should I just go for 15A for simplicity?