Alright guys. He did two vouch games for me, which will be followed by a boost from silver 2 to silver 1 bought by me. He played really good.
In the first game with Pantheon, he secured 2 kills in the first 4 minutes, one of them killing the jungler at his blue (including blue) and followed up by a kill to the midlaner. From there on it was a beautiful snowball. He camped bot afterwards as mid was okay, as soon as he got 6 he did one gank top and proceeded to stomp botlane. The enemies soon enough surrendered.
In the second game he got an ADC which wasn't that good. He missed quiet alot of cs, made bad decisions and didn't do well at all. By using wards and pinks, pinging his ADC alot and telling his team what to do in chat he carried this game as thresh. He basically enabled every single timer from the very first enemy buff for his team, making it easy for his jungler to counterjungle his enemy. A final hook onto the enemy APC made it into a clear victory.
He was really polite and genuine in Skype and even streamed the game for, which I didn't ask for.
TL;DR: carried hard, lead his team to victory by pinging and writing and was friendly all the time. Recommended!