Yeah, it is hard to say. I'd imagine with all of the ability walls, and some of the vods; a lot of the engagements seem to be close. A lot of the CS streamers I was watching play, Hiko, n0thing, and skadoodle; basically said giggle peak isn't as strong as it is in CS due to the lack of peakers advantage.. so as someone said holding corners is pretty strong. Skadoodle was running Viper w/ some ADS gun, and pretty much going between both.. which seem to work by forcing 1v1's due to LoS and such.
If anything, given that its riot and basing off of league; there will be routine updates, nerfs, buffs and so on. I don't think the game will be stuck forever in a AK/M4 meta like CS.
I'm more of a one-tap type person, so Deagle and probably the G3 looking gun. Regardless, that a shit rule.. but you're definitely among the lucky; actually sat and watched the whole time and no whitelist drop :c