I finally got out my embroidery machine to try - and this works very well. The saving grace is that it can sew very, very slow, which makes up for not being able to adjust the foot pressure. This is an older machine (but not anywhere near "old" in my book) and I think that feature was added on later models.
I'm going to finish up the test blocks with this machine, and it's very likely I'll use it for my gold set. Not sure what I'll do for the outlining on these yet.