What I think you are talking about here is more correctly called a "Parting Tool". I am also assuming that you mean "Tungsten Carbide" tips.
The idea initially sounds good, and might be worth a try for small jobs in soft metals, but I have some reservations about the quality of the steel used in tipped saw blades. You don't want it to shatter or bend. Because it is the carbide tip, and not the steel in the blade that does the cutting, the actual blade steel tends to be of low quality. Knife makers that make knives from old saw blades shy away from tipped blades for this very reason. You will also need a diamond grinding wheel to sharpen and correct the rake on the carbide. Proper tools are also tapered on both sides and the blade holder allows for this and will cant a parallel blade which could give you some problems. Ordinary tool steel parting tools are not that expensive, and one tool should last you almost forever at home. Whilst carbide tools are nice to have you don't need them for most jobs.