Weatherproof antenna connectors

We are about to deploy Mimosa sector antenna. Do the Mimosa provided weatherproof sleeves stand up to sunlight and do they keep the water out? Or, is it better to use mastic tape for weather proofing?
My prior experience with other manufacturers sleeves has not been satisfactory in terms of long term sun exposure and blowing rain.
I will appreciate any experience you can share.
Thank you.

We tar and mastic tape everything for the A5c devices we are running. We have used the included stuff with C5c devices a couple times, never seen too much weathering, but we have only been using C5c devices for ~2 years and we stopped deploying them after the release of the C5x.