No, I haven't, and I don't have a single 32-bit Windows installation in my whole office. I'm primarily working on Mac, and have a few Win 7/64 Pro systems running either via Bootcamp (for CAD) or Paralles (for some DTP and Office apps). However, since FormZ in its latest incarnations still doesn't export hierarchically structured STEP files (independent from OS or working units) it doesn't matter that much. It just confirms that using 6.7.3 still makes sense, it isn't as "outdated" as it sounds. Yes, this version is getting older, but so am I and my computers
Your picture of the drug addict pretty much nails it. I've "frozen" the status on most of the computers here in the office, ALL of them running permanent licenses of the Adobe CreativeSuite and other software. I've been self employed for about 22 years now, starting as a one-man show, running a small business with several employees now. I know and have experienced that there can be periods where running monthly costs can almost "break your neck". Under normal circumstances, this means no money and more work for a certain duration. But if this happens with a software subscription model, they'll take your tools after the first unpaid month. Means: bankrupt within four weeks, because you can't work any longer. There is NO WAY I will ever depend on such a model. Most people today underestimate the costs and the risk.
Oh, and regarding the Creative Suite: they've stopped adding features I need with CS4. However, I do have boxed permanent licenses up to CS6. I can live with that for a couple of years