yep. i never change plugs for a plug check. in fact, once i'm pretty sure she's where she needs to be, i don't chop my plugs. i just look at the base ring and ground strap.
say i go out riding and it's a little cool, or something's changed a little and I just want to check. I'll be riding for a few, 15 maybe 30 minutes. Then I'll cut out to somewhere I can hammer it down and then just do it. In 6th, I'll kill it, check the strap and base ring and I'll know exactly how it's running. Really no need to chop the plugs all the time, unless you just added some big mods and want to dial her in on the money.
If your pretty sure she's good and just want to verify, the strap and base ring will tell you.
Later and good luck.