User blog comment:GreenMoriyama/Raymond, the Traceur Policeman/@comment-7709681-20160805200055/@comment-7709681-20160806180548

Even after adjustments Lesdin's point still remains, and may I give some unmentioned considerations: With a minimum 4.4s cooldown, has an inner 0.5s on-hit reduction (which is further empowered by the ability's AS steroid) and grants a 5s buff that disarms for 2 seconds.

The buff already last longer than the ability's cooldown by itself after 37.5% CDR, and yet you can reduce the flat CD further with AS, all of this  ( including a sort of decent time window between disable and cooldown that turns unhealthy by the flat CDR )  along the buff's duration means that Raymond is guaranteed to have the buff always available unless ability-inhibited.