O.K. here are my experiences with the Calmini lift. I have put over 200,000 km's on it now (about 150,000 Highway, 50,000 Offroad pounding).
Installing the front end was initially a challenge, I can now take apart and reinstall the front end like a pit crew. It is a good idea to have a spare CV Axle Clip because it can break when removing the CV from the Front Diff. It is also a good idea to pre-load the the coil springs with the kit if you have access to a good spring compresser. It would have made it easier to get them in the first time and for a smoother ride initially.
Rear end is simple, just make sure to check the bolt tightness after going offraod. I noticed the the bolts in the rear linkage would get loose, I have since used thread locker and check routinely.
The fun part is alignement. It took me a couple sets of tires to get it right. You MUST use camber bolts or ovalize your struts to achieve the correct camber. Then I have also noticed that I only get the correct wear on my tires if I have a very slight toe-in on the alignment.
I haven't noticed any swaybar problems with the kit as stock, except when I turn the wheel hard to the left and drive in reverse. I am going to try and add a swaybar spacer of 3/4" - 1 " as some of the other posts have suggested.
One of teh things I am thankful for is that Calmini has made the design of the kit easy to change the various ball joints on the front end as I ahve had to replace them a couple of times.
Oh yeah, you have to got to get rid of the stock shocks and struts and replace them with OME or something else. Or just go offroading and smash the crappy ones that Calmini puts in the kit first then replace them.