@jackois
I recently tried one sensor without Compeed again, since I didn't get the sensors to work anymore with a plaster beneath it. After 7 days it was knocked off walking through a dooropening and I have to say there was again a bit of skin reaction (redness), while with Compeed I have no skin reaction at all. So I don't think they've changed the adhesive.
I put again Compeed under the sensor I'm wearing right now, but I made a small hole in the middle (like suggested by some forum members). It seems to work fine now. I'll report back if it prevented a skin reaction.
To people noticing differences between traditional meters and the Libre: the Libre reads a bit lower. I think that's on purpose, since a slightly lower reading can do less harm than a slightly higher reading (having you taking too much insulin).
If the Libre reads higher, mostly my bg is falling fast.
I rarely do blood tests anymore, except when I run out of sensors or when I start a new one. I use the Libre sensor and my own sense, if they do not match only than a blood test is needed.