of course you can do it as fast as ctrl, if the conditions allow it. Pressing 2 buttons at the same time is not the same as pressing 1 button at half the speed but with a double multiplier. In the middle of a big fight fps drops low and you will notice the difference between the 2 methods.
And you making a rather big assumption that mgames somehow caved into "whiners" about it being a bug. Couldn't it be the case that the koreans simply shared the same view as myself and the majority of players that ctrl is having an unintended effect on right mouse clicking, and removed it along with other bugs such as ATi sky-tearing. And there is nothing stopping them from removing multiple minorheals on the skillbar in future.
@sinister, i know what you mean. 99% of sins that fight me will just be trying too hard to abuse minor heal is one way or another and are hard to break down but are barely even hitting me, let alone comboing. The only guy who could do it remotely well was buddhas but his healing is not as good as his comboing.