Hi there !!
I've recently managed to see more of the bags, and have purchased a PS1 and a Keep All myself, so I can confirm some of the changes .
The new leathers (at least the tag on my Keep All) is marked as calf leather, whereas I believe the old ones are lamb.
I saw an older version of the White PS1 in large at The Room and the leather was a lot softer and more slouchy. Before I saw them in person, I ha though I'd prefer them to be lambskin, as it makes the bag look more slouchy and worn, which I think looks good on the ps1...however after having seen it myself, I realized that the lambskin version doesn't hold the shape of the bag well at all, because even though it was new, the edges were already beginning to curl etc., and the bag just doesn't look good at all...so in the end I think the change of leather helps in the longevity of the bag.
However, I think that in the midnight, the colour looks better in the older leather...because I happened to see it in the new version, and it didn't look appealing at all...I think the lambskin took the dye better and made it look more jewel toned. The blue was seemingly darker and duller in calf, but that's just my opinion.
I've heard that the calf skin also addresse the colour change issue better, because the old leathers, especially the smoke, was known to be prone to colour change.
I've also heard that they addressed the hardware chipping problem in the new versions of the black.
The clasp on the PS1 used to be glued on, as I saw in on the white one, but the newer ones are screwed on, which prevents the hardware from falling off, as some members have experienced.
Another change is that on the newer versions, the tag is fastened tobte strap instead of jut clipped on...which is a good thing because other members have mentioned problems with the tag falling of etc., and on the white bag I saw, even though it was new, the tag was gone, likely taken by someone while it was on display at the store.
I don't know when they started implementing the changes, as I am new to the bags myself and only bought mine recently, and they were already the newer version.
I used to want the older version more, because they took the colour better, but now I think I do prefer the new ones, as there have been many problems with the older ones.
Sorry for the long post !!
