Beware, I was scammed 10 BTC on IOTA slack channel from someone using the same nickname and picture of the dev. I didn´t know you can use any nickname on slack, so I accepted a non escrow trade, especially having one of the "devs" as trading partner.
When the trade was done, the scammer changed his name back.
https://iotatangle.slack.com/archives/D265GEA84/s1472507814000002

Afterwards the real dev with the same nick was making fun of me, I don´t think that is professional: