I understand where the original poster is coming from. There are certainly situations (especially when one is just starting out career-wise, is appearing in court for a traffic violation, etc.) when prudence dictates that it is perhaps a bad idea to show up with chest framed by hand-picked stitching, sleeves capped in working buttonholes, and so on. Most (real, not Soft or Z) Zegna suits I've see fall outside of those bounds. However, once one is used to the superior comfort and breathability of such things showing up somewhere important in a glued-together apparatus is uncomfortable and possibly confidence-damaging. The solution, then, is to hunt for a good, well-constructed but machine-made suit that can be tailored to fit acceptably.
I just wouldn't pay a lot of money for such a thing, given how limited my use of it would be. But I have been keeping my eye out for such a thing during one my period thrift store strafings and recently concluded the search by finding two suits with potential for such occasions. The first is a well-fitting (at least so expected, after a nip in the waist of jacket and some taking in of the pants) and well made (canvassed construction, Super 100's wool) but perfectly bland blue-and-black patterned H. Freeman & Sons MTM; the second a dark grey with lighter grey stripes flannel RTW Hickey-Freeman that fortunately has adequate fabric stored under the hem to restore a 34" inseam. They are together worth to me about the ~$150 (including ~$14 each initial cost) they'll have cost me after alterations, but not much more than that...
I don't see a problem with the Charvet tie. The only ties that might be a no for most interviews are a numbered series Hermes (because they're the most likely to be known) or a current season Ferragamo (because the person on the other side of the conference table may be wearing the same tie).
Then again, when I did my round of jobtalks I was clearly dressed better than all but one of the thirty-odd men who interviewed me. (He was wearing either wearing bespoke Huntsman or something made for him in the same vein, and a Brioni tie that I almost wore to the interview myself but decided against at the 11th hour.) Pick stitching, seven-fold tie, pocket squares, brown shoes, the whole nine yards. Yet despite the controversial subject matter of my dissertation I was offered positions at several universities. Go figure.