Truffles is so cute.
I do not clip my horses.
I try not to get them sweaty when it is super cold. That is just me though. I do not like cold weather.
You can ask yourself how much driving you are going to do.
In all actuallity you will be mostly ground driving and going about things slow. You are probably not going to go miles down the road, but you might, something to think about. If the harness pulls his hair, you can get a pad to help alliviate that problem.
If harness training is the only reason you are going to clip, I personally would save myself the aggrivation.
Truffles is going to be so cute driving!!!!