I've seen some reports that things like streaming to Twitch are affected, but I've never seen anyone complain about Skype or other video chat services. No-one's posting anything about Netflix either, though there is a thread here on the Rain subforum with fixed LTE users complaining about shaping during peak times even for gaming.
https://mybroadband.co.za/vb/showthread.php/959629-Rain-FIXED-LTE-crippled-now-due-to-Rain-mobile
And getting information out of Rain currently is like drawing blood out of a stone. I think that, at the very least, you guys should be investigating this on your end and seeing what you can do about it, because it's your brand that's attached to Rain because you're a reseller.
I'm still going to be getting my SIM next month anyway for testing the network.