[Raptor]

it is worth it to do both, but seriously you already have the plugs out to do a compression test, wouldn't it be nice to actually look at the pistons rings and cylinder walls if you have that capability? Visual inspection is nice and is an easy way to figure out for sure if there was piston to valve interference. Not to mention if you pay attention while you are in there other things could be spotted as well such as damage to the piston top from detonation etc.