Join Date: Sep 2006
Lacquer (clearcoat) only will not require blending as it's transparent. So a proper buff/polish will make the job invisible. And if he is asking about lacquer only they will not remove the old paint before.
Necessary? Nah, that's down to taste and budget. If your wings are in good shape and you can spare the cash, then why not put on the extra protection to keep them that way. If they are looking crap with stonechips and dents I'd have them do a proper job (with dent removal, body filler, primer,base, and lacquer rather than lacquer only) if budget allows, and if not, save up until I could afford the proper version.
Please keep in mind that it's very hard to get a 100% color match, so the more you get done at once, the more will be the same color. My car is currently at least 4 different nuances of nero metallico from equally many repairs, but it took me 2 years of ownership before I discovered the first 3 nuances, the 4th repairjob I did myself so was very aware of where and what to look at.