Has anybody borrowed funds like this?

[Vish Iyer]

Dear Investors,

I recently got an offer to borrow money from a hedge fund.

These were the conditions:  I put 5% of the deal amount into an escrow account for 30 days. After the seasoning amount, the company funds the remaining amount including rehab cost and takes 15% of the profit after the property sells.

Has anybody used this type of loans? The person also placed an ad on BP about  this. Is it ok to put ur money upfront? 

Please share your experience.

Thanks
Vish