I like the look of those cases. However, for me they are too different for me to have a mix between jewel cases and poly cases. Therefore, I wouldn't consider switching over unless I knew I could get covers for all my PS1 games, and that might be a big project on its own.
It's definitely a big project. It started out as a fun way to display my PS cases but it quickly grew into a laborious task. That's why I have only three fully made and instead just got replacement jewel cases.
I hate, hate, HATE jewel cases, so that's why I wanted to get the poly cases; in in the end, however, I missed the "official" artwork of the games, despite sometimes being so bland, and just decided to get replacement jewel cases.
It's still fun to make the covers, and I have way more made in my computer. I just never printed them out.
Might still do so for games which didn't come in jewel cases, like demo discs and such.