1.) Looking at the articulation lists would have answered this one pretty quickly:
Vienna SE - Horn ens. (8 players):
Staccato (2 alternations, 3 vel. layer)
Sustained (3 vel. layer)
Sforzato (1 vel. layer)
Legato (2 vel. layer)
Horizon Epic Horns (up to 4 vel. layers for most):
Staccato, portato 0.3 and 0.5 sec. in two variations, sustained, sustained, "blared", and flutter tonguing with constant dynamics and crescendo.
Medium crescendo and diminuendo with 2, 3, and 5 sec. tone length, fortepiano, sforzando, sforzatissimo, and crescendo-diminuendo with 4 sec.
Half and whole tone trills, and minor and major chords.
Slow and fast piano and forte legato, and normal and fast performance glissandos.
Legato repetitions with 5 repetition layers, 4ths at 50 BPM, mezzopiano and forte, crescendo and diminuendo.
Portato repetitions with 9 repetition layers, 8ths at 92 BPM, piano; and 90 BPM, forte, crescendo and diminuendo.
Staccato repetitions with 9 repetition layers, 16ths at 90 BPM, piano; and 88 BPM, forte, crescendo and diminuendo.
Staccato with 9 repetitions, 16ths from 140 to 180 BPM.
1, 2, and 3 upbeats, 16ths at speeds from 80 to 160 BPM.
Glissandos, up and down, from 4th to octave.
2.) If the shop doesn't display (it should on a purchase, you selected a region before), check back with the distributor, that's Best Service for Europe, Time+Space for UK, and ILIO in the US. Complete list here:
http://www.vsl.co.at/en-us/65/75/25.vslAll the best,
PolarBear