Kotmj, do you think that the steamer can be used fro daily basis or just for travelling?
Wow, I just saw this question.
Actually, jackets should not be steamed or exposed to humidity. It differs from coatmaker to coatmaker, some parts of the jacket have been imparted with ironwork (either stretching or shrinking with the iron). The geometry of the seams, the darts, the pad stitching, and the ironwork all conspire to give the tailored jacket its sculptural appearance.
When you steam the cloth, it loses its ironwork. That is, if it was shrunk, it will expand. If it was stretched, it will contract back. Not completely, of course, some residual ironwork remains, but the jacket might end up with puffed up seams and generally lose much of its crispness.
In the Laksamana No. I pics I posted in the suiting thread, terror had trouble making out if there is a breast pocket. The jacket also looks very crisp and sculptural. A major reason for this is the fact that the jacket received its final press only 5 minutes before the pics were taken. The final press takes about 20 minutes and really gives a jacket that crisp, tailored look. It would look very different if it was steamed. The Armoury wrote somewhere that they have a dehumidifier in the shop because the humidity causes the jackets to lose their shape.
So what to do about the wrinkles? Well, it's best to chose a travel-worthy cloth. Much depends on it. The thicker the cloth the more crease resistant it is. High twist cloths are also very crease resistant. And the tailor should be mindful to use a travel worthy canvassing material, the sort that has astounding crease recovery. I've felt many, many types of canvassing material (body canvas + chest canvas) and some perform poorly when crushed while some are literally uncrushable. You crush it in your palm, hold it, then let go. Some canvas will be creased and wrinkled, a few others just spring right back and show no signs of having been crushed. Theoretically, pairing a canvas like that with a cloth like fresco should eliminate the reason to have to steam the jacket. (Though I haven't tried it myself.)
If any of you have seen a coatmaker press a jacket you will realise 30 seconds into the demo that your efforts with the steamer at approximating it are woefully inadequate.
Trousers are more forgiving, RTW and local bespoke trousers have zero ironwork in them so steam them all you want. But the trousers I make have 20 minutes of ironwork imparted to them so they too should not be steamed.