SIP Preconditions and/or RSVP-enabled Locations

Hi guys,
Just wrapping up the CIPT2 section on RSVP (locations or intercluster SIP Preconditions) and was wondering are people using this kind of stuff in production? RSVP locations somehow make a bit more sense though but seeing how SIP Preconditions tackle intercluster calls and is mainly a Cisco-only thing, I was wondering how big/relevant they really are out in the field...not asking for confirmation to skip the section
(already wrapped it up) but just for my own info.
Thanks.
Just wrapping up the CIPT2 section on RSVP (locations or intercluster SIP Preconditions) and was wondering are people using this kind of stuff in production? RSVP locations somehow make a bit more sense though but seeing how SIP Preconditions tackle intercluster calls and is mainly a Cisco-only thing, I was wondering how big/relevant they really are out in the field...not asking for confirmation to skip the section

Thanks.
2017-2018 goals:
[X] CIPTV2 300-075
[ ] SIP School SSCA
[X] CCNP Switch 300-115 [X] CCNP Route 300-101 [X] CCNP Tshoot 300-135
[ ] LPIC1-101 [ ] LPIC1-102 (wishful thinking)
[X] CIPTV2 300-075
[ ] SIP School SSCA
[X] CCNP Switch 300-115 [X] CCNP Route 300-101 [X] CCNP Tshoot 300-135
[ ] LPIC1-101 [ ] LPIC1-102 (wishful thinking)
Comments
CUCM SRND 9x/10, UCCX SRND 10x, QOS SRND, SIP Trunking Guide, anything contact center related
[X] CIPTV2 300-075
[ ] SIP School SSCA
[X] CCNP Switch 300-115 [X] CCNP Route 300-101 [X] CCNP Tshoot 300-135
[ ] LPIC1-101 [ ] LPIC1-102 (wishful thinking)