swap left-right seats

I don't believe you can swap seats, the recliner is on the sides and the seat wiring plug will be different on each side. My Prius 4 driver side seat is electronically controlled when setting the seat positions, my passenger seat recliner are all manually controlled.

 

Seat covers...

 

You haven't seen Clazzio's.

 

Aren't there airbag systems on the exterior sides of the seats also?

 

Here's the airbag system on my 2013 PiP. Yours may be a little different. Also, note the seat adjustment controls as previously mentioned. And the mounting bolt pattern may not be symmetrical.

 

Among other things, yes. Check your owner's manual. If you get the pdf version on line, you can just search for "air bag." That's what I did.

But you also probably can't get to the seat controls if they're jammed against the center console.

 

Ah! That may be different. Not sure if that's symmetrical. But you'd still have the air bag issue if yours are like mine.