Just over 11 months with my phone. After long months of waiting, it finally got updated to Android 2.1 a couple of weeks ago. The whining on the forums about getting 2.1 has ceased, only to be replaced with whining about 2.1 and getting 2.2.
Android 2.1 has a lot of nice features, but when it comes to performance and battery life on the Cliq, it's a steaming pile. I am having fewer problems with phone calls though. There's that at least.
I'm about to put it through another factory reset with limited apps installed to see if things get any better. I'm halfway tempted to go back to Android 1.5 which was decidedly more zippy than 2.1 is now.