I wouldn't - I believe there are extra seams in the material to allow the airbag to pass through.

I would keep your eyes open for a set of ST seats with side airbags, or take the seats to a retrimming company and see if it's something they could accommodate or replicate on the ST material.

Resistor will stop the airbag light coming on, but would be better if you could get your airbag ECU reprogrammed to turn off the side airbags. I think FORScan with an extended license might be able to do that.