I have used several of their patterns. free and commercial.. the commercial ones, esp the abisko jacket are great, the forum is super helpful.
If I were to make a vest now I would just take that abisko pattern and not make sleeves for it.
they have a few free patterns therehttp://www.andersj.se/
is a good place for all kinds of projects. the pdf files with matterns are great, even if they are in Swedish I was able to undertsand many of them... maybe not vest stuff here, I cannot remember, you wil have to dig round the gor det sjelv section... but good general gear sewing info.
For me the problem with sewing clothing has always been the order of things.. which bits go together,when????