By the way, the point I was trying to make was that for me mixing between MTT and SNG keeps things fresh and challenging. I do not think I could grind out 50-100 SNGs a day like some do, and I do not think I could handle the variance (at this point, at least) and schedule demand that would go with doing all MTTs, just like I could not handle 12+ hours a day in a huge law firm 6 days a week (that sucked!).

I don't see any problem with mixing up SNGs and MTTs unless you are depending on it for month to month income or don't feel capable of shifting gears in the manner required or don't have time to put into the study required to do both successfully.