I think the JMW boutique is actually on Burlington Gardens, not Vigo St itself. The boutique is almost opposite one of the entrances to Burlington Arcade, near Savile Row, also near Abercrombie & Fitch... sorry to mention such a name amongst such esteemed company.
I have a few pairs of JMWs (boots and shoes). I find them to be excellent. Apparently (according to a former manager there) they get their box calf from the same tannery as JL... not saying it's the same grade or that the shoes are as good as the JL Prestige range etc. I saw an article on one of the shoe threads translating a Japanese magazine that put the JMW construction quality above that of G&G (MTO/RTW). I have G&G and they look totally different... for me, only time will tell which are better. I do find them to be better looking, seem better made than my C&J Handgrades. Also the waist of the JMWs is pretty tight which makes for a lovely shape.... not to speak of the width options at JMW which do not seem to be available at C&J. I think for that price they are very hard to beat. There seems to be a lot of handwork in them, at least more than C&J Handgrades as far as I can see.
I was blessed enough to secure some double monk boots in 2007 at half price and they wear like a dream. Also forked out a load for some chocolate exquisite Chelsea boots with a balmorals line which sounds disgusting... but they just work.
http://www.styleforum.net/showpost.p...&postcount=313 JMW do the English thing with a French flair that is not over the top... it is just right. J