Any self-funded searchers raise equity capital from individuals (friends and family) through a self-directed 401k platform like Directed Equity (link below)?

My understanding is it allows you to lever up tax-deferred retirement assets as a equity funding source towards a business acquisition.  I’m a fan of this concept and curious if anyone has any experience with this medium to pool equity capital. 

 Any insights are appreciated!

 Abdulla Mirpur