I dont use "real" Gates. (only if its too high to jump over)
No, I use the Cut-Tool and Crossfades for "technical Gate".
To produce the "trance-gate" as an effect on a synth, i prefer using
LFO's which modulate the volume or the cutoff.
I own Omnisphere and I must say I love it! It has a very cool
Envelope Section with four Mod-Envelopes. You can draw in some
nice rhythms which will modulate anything you like.
When the sound is already bounced to audio... there is the "BigSeq"-VST
(by Audio Damage I think) which is a sequencer/gate to chop the sound
afterwards. Its free but... its gone! I can't find it on their website... -.-
But there must be something similar...