Simon i sweat like buggery in the gym! Over the weekend, one of my treadmill sessions, afterwards i had to wipe down the treadmill i used, and the one next to mine!
On the climber i use Level 12 as my 'base' pace, and won't go below that, even on a slow and steady session. And for the first 15 minutes or so i didn't go above 12 or 13. But moving into the final 30mins i was holding Level 14 and 15 pretty constantly.