You consider putting a deck of cards away upside down with a cut card on top “high maintenance”?
It’s also not a “high rate” of issues. I have around seven setups of Kems that are perfectly flat. Since I learned this super simple storage trick I’ve had a 0% warping rate.
Look, usually don’t recommend Kems to people because they are too expensive and if left out of the box or used in high humidity they may bow. Also most casual players wouldn’t appreciate the feel of one card vs another.
If you are one of those types and/or you live in a place like Miami and play cards on your lenai …Kems are not for you. If you are an enthusiast who plays a lot of cards and appreciates the finer things…then try them.
There is a reason most casinos in the US uses Kem cards. I say most because I haven’t play all over but Ive played in AC for over 20 years and a few times in Vegas and PA card rooms. I’ve never not seen Kems except in a couple tournaments when they used Gemaco….and I remember a dealer bitching about them once at Harrahs! . It’s what dealers like and what lasts for them.