A friend has exactly that ^ on his and he loves it. His problem is 61 year old legs and short stature on a 2500 4X4 with helpers. His ladder is getting loose and wobbly but that's probably because he uses it regularly. I've never seen it new.
I'll give GM kudos in their built in step in the bumper of the new trucks. Still need to reach, but at least it's only part of the way. And another friend with a 2010 Ford has a built in ladder in his tailgate that pulls out, but if you have a trailer hooked up it will interfere.
I used to be able to get into my Dakota without a problem, but the RAM is a tad higher! I still refuse to give in tho~~~ I'm "only" 68