Roel ... I'm not saying you're not a musician (and this argument has reared its head before on these pages), but let's face the fact that as long as we are using arranger kbs the performance is not soley our own...
While the use of on board styles generally allows for more flexibility, for some of us there are times when the use of an SMF is appropriate ... and with my technics kn6000 I can make lots of changes on the fly to meet my needs at the time ... AND... I always play live with the SMF ...
To paraphrase Dnj, it's all tools of the trade ... use what you need, add your heart and soul, and satisfy the audience AND yourself !!! ...
t.