Good news indeed, Ond!
Those 100hz CRTs... they have some issues with regard to retrogaming. They do produce some artifacting, colour bleeding and "dot-crawl". I've never had a Panasonic but, at least, that's what I get with my Loewe 100hz CRT TV, and it seems pretty consistent with others.
These issues are more noticable with 8-bit games, especially games with static solid areas of colour like Pac-Man and Mr. Do!. They look "OK", but there is a lot of noticeable colour bleed etc.
However, they are GREAT for fast scrolling games like shmups, like Flying Shark or Batsugun, Raiden games, Cave games. The 100hz capabilities allow these CRTs to easily keep up with weird refresh rates like 55hz, possibly by doubling the scan rates, and prevents these scrolling games from looking "flickery".
In short, my impression is that the 100hz CRTs want to "fill-in" the boring bits of old games like solid areas of colour (thus the issues above), but are great for video and fast-moving detailed action. So, maybe not so good for "Classic" era (roughly speaking, pre-1985 to 2000) games. If you want to put a 100hz into a cab, consider the games you want to play (I put my Loewe 100hz into a vertical cab and I love it for playing shmups).