Correct - in ERG mode the climbs/descents are basically only there for viewing etc - if you interval is a rest one but you on a climb on the screen, it basically ignores the climb in terms of difficulty etc
Yeah - that's right as well.
I created a 5 min warm up, then 30 seconds @ ftp plus 60W and 30 seconds at 120W x 20 interval training, then 5 min cooldown. 30 min workout in ERG mode for the days when I'm short on time.
Which is good, can you imagine sprinting up a 15% when you're training? Would be easier to hit the power mind, and more "life like" but I like the ERG mode for pure intervals and training purposes.