John,
The description says the TL 700 will last about 2 months. Actually I get 3 months out of mine and I don't 'baby' it. I try to be conservative in describing the life of the systems. It's the hair that sheds--the hairline does not wear away. I recommend that you attach the system with a light coating of acrylic glue such as Base Bond or I Glue (although as always it depends on your personal body chemistry). There have been people that have posted on the forum and stated that they don't even need glue to attach the TL 700--they use 'Got To Be Glued Spikey Hair Spray' to attach. There is enough 'stickiness' in this hair spray along with the the way the system 'vacuums' to the sclap to give you a good hold for at least a couple of days. You're right about not needing to do a mirror slide with the TL 700. You can remove and clean the unit with either Lace Release or 91% alcohol.
Regards,
John