Welcome to the forum!
So sorry to hear of your accident.....I cringed. My twin 17 yr olds have atv's, so of course a mom will worry. I'm going to read your post to them if you don't mind.
On the positive side! You do sound like a prime candidate for the SCS aka Dorsal column stim. Mark is correct in stating the main reason they add the no driving/machinery warning is simply to cover their rears. Use your own judgement on this. To some, the stimulation is distracting enuf that they turn off while driving. Working machinery is different - you aren't on a highway potentially putting yourself or someone else at risk. Some people claim they do get surges when changing positions, even just looking down will cause your leads to stretch a bit and you'll feel a stronger sensation. This is the thing to be aware of. I would hate to see you cutting sheet metal or something and ......
well you know.
SCS usually has good results for lower limb pain. I too have bilateral leg pain, but mine isn't due to an accident. Peripheral neuropathy, radiculopathy and CRPS are conditions that respond well, although CRPS is known to spread in some patients, so extra caution should be taken when making the decision.
Getting a 2nd opinion couldn't be a smarter choice. You certainly don't want someone doing this who's just out of med school.
It's great to have you here Mike! Stick around and let us know how this unfolds for you.