P-124 Aviator Emergency Parachute--Comments wanted

The P-124 Aviator Emergency Parachute seems appealing
because of its low descent rate and rapid opening
time. Since its design is more like a sport canopy
than a regular round emergency canopy I wonder if anyone
can speak authoritatively to its use by glider pilots
who have never jumped any kind of canopy (and don't
intend to ;-)

Also, can any owners speak to (i) comfort, (ii)
repack issues, and (iii) whether it is worth the
considerable extra price compared to the usual Strong,
National, or Softie chutes?