Phoenix Systems Reverse Brake Bleeder

I use the Mity Vac for initial bleed/fluid flush, then have the wife pedal bleed.
Yes, you will see some air bubbles pulled in around the thread with the vacuum, at least that's been my experience for the last 30 years I've used it.
I've also made my own reverse pressure bleeder using a small garden sprayer. Just removed the sprayer nozzle and used a piece of tubing over the fitting to the bleeder.