Interesting. I knew one with the bad qualities of both of the subtypes you mentioned...so not sure if he was Si or Te. But as far as the "strict and demanding" part, there's this funny thing where we both know (as an ENFP) it's not going to work on me. Sometimes I'd play along, sometimes not. But it was sort of amusing more than anything. But then again, I've never had an ESTJ boss...so not sure how that would work.
I do know another ESTJ who never makes sexual jokes, etc and has a lot of tact. Prob individual differences...
ESTJs are usually lots of fun though.