My main was a monk from '99 when I started playing.
When I first found RedGuides, my whole KA setup was done on the same principal. To be fair, I found myself switching to the tank quite a bit which of course meant I needed separate hotkey setups on the different toons. It was a bit of a pain, but I quite enjoy using different toons to drive and play so I didn't mind too much. I only really boxed a single group then so I had each toon setup to drive from. As you can imagine hotkey maintenance used to take up quite a bit of time...
The plugins were an epiphany which made it vastly more efficient irrespective as to which toon I was driving with - but I found myself barely touching any toon other than the monk or tank as there's just no need. I still maintain the hoykeys across all my toons however, just in case anything goes west so I can still jump on any to drive and everything is duplicated so it's easy. Like I said though, it's a lot of effort to maintain this as the hotkeys need to be archetype and/or class specific.
I still drive mostly with the monk and now I run up to 27 toons in a half raid format. I do group content with all, so can and do drive with various toons depending on which group I'm on or which toons needs to. That said, a lot of raid content at higher levels doesn't really need a monk puller anymore, this makes me very sad and often, I cry inside... I love my monk and back in the day I used to take a good deal of pride from the fact that I was bloody good, so the lack of content to show off my monkly skills these days is rather disappointing.
During raids, I find myself almost exclusively driving on a tank because there's just no need to use a puller so switching back actually makes it more effort for no benefit.
I have this multi-toon raid setup across 2 different level ranges. I do have some monks in the lower-level raid where monks are arguably much more useful but I never drive on them, preferring to use the tank or a bard. Mostly this is because I've always enjoyed the pulling functions and playing a bard main was always on the agenda, but in part also because there is not yet a plugin for them... I expect when MQ2Bard is finally released, which I'm hoping is pretty soon, the bard will be used less by default.
(
@Sic, please note that I didn't ask when MQ2Bard will be released, so there's no need to ostracise me
!)
The hotkey maintenance and management is still quite a time sink especially as I'm often tinkering with and trying to improve it. Although to be fair, I rather enjoy it, sad and alien as that may sound to some.
For me, it's all about what I enjoy, so despite never actually "needing" to drive with the puller, I do so as much as I can regardless because that's the part of the game I enjoy the most. After tinkering with hotkeys and re-arranging my bank bags, anyway.