I’ve got the JG hand controls on my Ioniq 6 (had them in my last couple of cars too). So far they’ve been fine, yes sits a bit below the steering column but hasn’t been an issue for me or other able bodied drivers, unlike my previous MG5 where my wife hated them being in her way.
I’ve no complaints about them but I also haven’t seen any other manufacturers set up to compare against.
I didn’t pay any extra for these but I do know that some places will charge and some won’t… 🤷♂️ don’t know why, maybe down to individual fitter having to travel or the company looking for more business