Hi, I do, but only on a trial basis. There are a few people I think who use them long term, hopefully they'll be along at some point to help you. Donnely'sdogs (think that's how you spell it) has funded CGM & uses the Abbott system, someone called Ali has NHS funded Medtronic CGM with a Medtronic insulin pump.
I've just finished a trial with the Animas Vibe pump & dexcom CGMS, and found it very good. I got 2 sensors given to me by Animas, the first lasted a good 13 days then started being inaccurate at times so I took it out at day 14. As my skin looked in really good nick after having it in for that long, I left the 2nd sensor in until it actually failed, which was at 18 days exactly. I'd noticed quite a few inaccurate readings from about day 14-15 though, so I reckon you'd probably get 2weeks good use out of a sensor. Again my skin was in great condition, no signs infection.
The sensors are quite small, easy to insert & feel well anchored to my skin, though I did use extra stuff to keep them in for so long. You can't feel them at all, and mine were really very accurate - I'd get the odd reading of maybe 20% out but they were usually within 10% of my finger stick tests.
One good thing about the Dexcom system is that you can calibrate whether your BG is rising, falling or stable - the Medtronic one requires a stable BG, so you couldn't calibrate soon after a meal for example.
I'm going to get a 2 sensor trial with the Medtronic system on Jan 31st as well, so will know more how they compare after that.
Hope this helps.