Timo's review is rather lukewarm, with a "many roads lead to Rome" conclusion that falls quite a bit short of endorsing it.
He also states that T19 has more of a catapult effect than T05, and (to me) surprisingly that he considers T05 or D05 more suitable for direct play close to the table. Everybody seems to agree (mass hysteria?) on the flatter trajectory, and a slightly softer feel, with more sense of dwell, and a more controlled passive play.
Haven't tried it, but the general picture I'm getting is that T19 might well be a promising Fastarc-G1 alternative.
Yea, he's obviously also tried T19 a long time ago in the developing stages, and with 09C already around as well, being a better fit for his game, his choice was made. Wonder what he would have picked between T05 and T19 if the Dignics weren't around, or it he was still favoring a mid-distance style.
He states that T19 is faster and has more catapult, but I think he's following how Butterfly is marketing it there, because he says it's more forgiving which would indicate it's slower and has less catapult. However, he does say its trajectory its flatter while Butterfly is marketing it has having a higher arc, so he's taking a little bit of liberty.
Based on his review (when reading between the lines), TTD's, PandaPong's etc, like you said, there seems to be a consensus that it is slower, has a flatter trajectory, a slightly softer feel, more dwell, is slightly spinnier in some areas, more predictable and forgiving, less direct/kick/catapult/spring/explosiveness, better control/feel/touch/safety/stability/consistency, better at blocking and passive play.
I like T05 on my FH, but it feels too hard for my BH, and in general, I prefer more stable and balanced rubbers like T80, Fastarc G-1/C-1, Rakza 7, Rozena, Vega Japan... so T19 does sound promising indeed!