Its all about the situation your in. I too can play both hands and feet if necessary with a Style. Used to do it with a real drummer in a duo and then alone with a drum machine. Done lots of solo Piano work too. Bhe SMFs, if used and edited correctly just sound better with me playing just the keyboard part as I would do with a band. And you can concentrate on your Vocals more.
I refused to DJ for a log time but came around and got lots of work. I refused to use SMFs because I felt it was cheating. But after doing it and playing along liveI've changed my mind. The music business has steadly opened up to those with lesser and lesser talent and we can't change that.
Just do the best we can to satisfy ourselves and most important out audiences.
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer