Whatever floats their boat.One other tip, pick a strategy and just do it.

You will need some money to float this thing.

I have float so don't mind the payment deposit lag.

Typically are at 85% LTV and are floating between 5.75% and 6.25% at time of writing. 

Downpayment %Term (Amor)Rate (Fixed or Floating?)

: So, I'm floating the cash, but we both pay the HELOC interest?

I've had a few ideas floating around in my mind over the past few months because I am terrified of living my life in debt until I'm 60 (why I had to turn 29 to figure this out is beyond me)!! 

They make money on investing the float.

And then on the other extreme you've got San Francisco, where sure it will appreciate a bunch, but you're cashflow negative in the interim (though we do 100% see people buying in SF or Marin, etc, purely speculating on appreciation... these are higher net worth individuals who don't need the cashflow and can float the $2k/mo in the red). 

They also offer the float down lock which will drop my rate another eighth percent should rates drop a quarter which they did last week.