Good to see you online again Mayflower - I was thinking about you the other day in connection with ice skating and Bon Jovi, or was that another Mayflower?!!!
I learnt TM a long time ago and found it very useful. It seems entirely compatible with SFQ with the usual proviso of leaving 30 minutes between. I notice that I have tended recently to use the SFQ small universe meditation in place of TM beause of a health issue that I'm wotking on. One thing that I did find was that in the self concentration meditation in the quiet bit I would sometimes 'slip into' the mantra from TM, because I had connected it almost automatically with the meditative state. I stopped when | noticed it but it didn't seem to cause any problems.
i hope you are well and enjoying life.
Love
Kev