Showering with the jacket would flood the pores of the skin with water, beyond what they're "naturally" used to...Then drying that water quickly with heat and air in the dryer would lead to the pores shrinking...This happens even with natural "sun drying", but the process is sped up in the dryer, and it's this process that leads to the shrinking.....Any leather will be subject to this, but different skins will react differently, depending on their origins and conditioning...The leather that Vanson use is well treated and strong enough to not shrink that much in the process...
While I wait for a time and place and someone to take pics of my Heron X1, I don't have time to search the whole thread really but what's everyone's favorite method to soften and add a little distress? I don't want to risk any shrinking since it fits nicely, so I think that rules out things like the dryer and shower, no?
Wore it to work today; I felt so conspicuous since it's so very brand new and obviously Wolvie's jacket, but nobody's mentioned it, heh.
Since you're asking about other methods, apart from the shower one, it's obvious you've already considered it.......For something less "risky" than showering with the jacket, to soften and distress most leathers, I'd suggest that you're coming down to more "natural" methods...You obviously don't want to shrink the jacket, so covering it with water and rapidly drying it is out, but to soften the skin, there are a couple of ways to work the leather in...You could try sleeping in the thing...If it's not too "weird" to you? Zip it up and sleep in it...You won't notice much distressing, but the heat and movement overnight does help a little in pushing the jacket to adapt to YOUR body...It won't add any drastic lines or look to it? But you may find some interesting folds and bends, and the 7 or so hours in it will wear the "newness" out, in a rather shorter time than "normal" wear? (If you have a wife...She'll be pissed....Be aware of that one...)
Also, you could try heat and rubbing....Again, it sounds weird, but leather is a skin, like your own, and when heated up, and rolled on, it "loosens" out some...Like warming up before doing sports...If you mix the two things, rolling motions over the leather, with heat? You'll be working the skin in more, and getting what I suspect you want in the jacket reaction...
Aside from that, there are many good ways to wear it out or distress it, artificially...I tried a couple of these recently with my Wested Lamb Indy jacket...So if you want some ideas on that? Let me know and I'll throw out what worked cool for me in a later post....But since you seem to be asking about ways to just wear in the skin a touch, that'll work...No need to shower with it...Just naturally warm up the jacket, and roll the skin back and forth until it loosens up...If that doesn't do enough, bag it up, and sleep on it, and if you want more, then try a night or two wearing it....
I've done all those with jackets at various points, and depending on what you want, they all have decent returns...None of them will shrink the jacket either, which showering may well do...So avoid that..(But you knew that already)...
Regards..