The short answer is yes that it works, but it`s based on a really simple concept of prepaying your mortgage. The other flipside to it, is that your investments will be tied into Manuallife mutual funds. There are several similar plans out there, some better than others so you have to do your due diligence.
Tax Deductible Mortgage Plan, Money Merge Account are two others that I`m familiar with. Basically, the plans rearrange your cash flow and calculate the precise time to prepay your mortgage.
If you set yourself up with a readvancable mortgage, you can do the same thing by working out a monthly budget and then do 2 things:
1. Use any surplus in your budget to prepay your mortgage. Then readvance the money for a qualified investment.
2. Use incoming cash to paydown the LOC portion, live off your credit card for the month, then pay the balance off with the LOC. (this can be risky if you don`t watch your budget!!) Effectively, you`ve used the banks money, without being charged interest for a month.