They are fantastic! Print came out great...BUT and this has nothing to do with the designer, I printed five off on one plate on the X1C and the print stopped overnight saying it had detected Spheghetti.
I have it set to medium detection but the A.I thinks the design is a spaghetti failure. I simply resumed the print and it carried on like nothing had happened, again, nothing to do with the print file or the designer, just A.I getting it wrong :)