Update:
Samples have arrived! The color of the sliders looks really awesome in person and that is great news as I wasn't sure how well it would translate from CAD render to real life. I assembled a few on my TKC1800 with alps, and they are super smooth.
And the bad news I was eluding to earlier is the slider samples...I received a FAI report, which goes over every measurement for each sample to check if they are within the tolerances given. That is where the main issue lies, I gave them a spec of ±0.05mm, which was always stated on the drawings and even in email. But somehow on the report the tolerance was changed to ±0.10mm, double the tolerance I wanted. Which brings about issues with some dimensions being to small and others too large. Almost every dimension, when checked against the correct tolerance, was very out of spec, meaning every slider sample is basically impossible to tell performance from. They wobble like crazy because the MX mount is too small, out of spec, half of the wobble is just from that, otherwise they should wobble the same as alps do.
Other bad news, the ejector pin impressions seem to catch on the switch plate leaf spring, which sucks because I mentioned it to them a while back, and had the mold design changed to fix that issue. But I will take the blame for that because I just never followed up with that to make sure it wasn't going to be an issue after the change, after the above tolerance issue happened, I wish I would have.
What does this mean? I am not 100% sure yet, because the first issue may mean new molds need to be made as any dimension too large can't be fixed as there is no way to add material back onto the mold. The second issue may be able to be fixed easily, it may not, but if new molds are made, this could be fixed at the same time to never cause an issue. I am waiting on a reply with the FAI report for the top housing, as well as an answer to this question. I just didn't want to leave everyone out of the loop even if I was partially to blame for an issue.
TL;DR: Samples look nice and are smooth. Manu didn't read drawings, doubled tolerance, almost all dimensions are way too small or large. Ejector pin impressions catch on the switch plate leaf, sucks, caught first time, didn't the second. May need new molds, not sure yet. Waiting on a reply from manu to figure this out. Sorry...