The total BTC invested so far appears in pesobit ICO page. The Escrow address is multi-addresses held by Escrower so there isn't a unique one to show on the ICO page. If you suspect about that number, you can contact the Escrower.
The 2nd post also shows the link of Escrow addresses which can be found here http://pastebin.com/raw/2igS5yjP
If your address is not one of those then your deposits doesn't go to the Escrow.
I see a lot of addresses here. It has what risks for investors?
The reason why there are lots of addresses is because every investor who created an account gets assigned a specific address. As long as their BTC address in their account is one of those (you can do a ctrl+F to find) addresses then you'd know that your funds go to the escrow not us.
A specific address is just a proof of their ownership. I have an address, and a corresponding amount of PSB. Can i withdraw upon end ico right? is it automated ?
Well it will go to your online wallet attached to the ICO page but we'll be adding 2fa for that matter so your Pesobits will be secured.