I guess what it really comes down to is this: Is a corpie using a mixer as a source of cheap, menial labor themely or would they seek to hire topsiders only (who would probably be insulted if offered such work)?
Made up Example: Misses Corpie wants to throw a dinner party and invites several or her corpie friends to her home. Of course, she has an image to maintain so she want's to hire someone to prepare the food and drinks using her kitchen and to wait on her and her guests.
Would her hiring a mixer to do this kind work as a one off job be unthemely? What would be the themely solution to a corpie's need for such labor? On the flip side, would it be themely for a mixer to do this kind of job or would it ruin them?
I am not sure if this is the appropriate place to ask this kind of thing but I find myself wondering if the push to emphasize the divide between mixer and topsider might have be a barrier for corpie characters to involve others in play by hiring them.