I will normally fly solo from the right hand side when I need to do a solo flight (quite rarely to be fair these days), though probably not a PA28 purely for the reason the fuel selector switch is extremely difficult to reach from the right seat.
I found the initial transition for 3 or 4 hours to the right hand seat on the FI course was quite strange, but I never had had any issue switching back to the left seat for IR renewals and such forth.