I really don't like cheating, though I'll admit to having done it once or twice in the early days of my playing....
These days, I hate it. I play a few times a year with rental groups, using my kit. If I think I've been hit, I walk - it gives the first time kids a buzz to knock out the "proffessional" (LOL!). Indeed, on days like that, I tend to play far more aggressively, and rarely make it to end of games.
It's Sup'air where it gets more difficult. I will walk whenever I KNOW 100% I've been nailed, and would never deliberately wipe. BUT, you get the odd borderline job - last round of KotH I was in back centre, and had to fill in when right corner went. As I slid in, I felt a couple of balls kit my heel. I tucked in, and waited for the Marshal to check, despite being sure I was out - he called me clean and I was able to make it down the snake, and we won. Cleaning up for the next game, it turned out there was paint all over my ankle.
So short version, I won't go out of my way to cheat - but at the same time I'm not going to go out of my way to call myself out on bordeline calls......