The silly notion that a starter is just wrong on a gasser or that most do not use one is in fact wrong. The fact of the matter is starters can be a huge asset for any engine that needs it. Its that simple and I find that what Rodney posted above to be quiite accurate.
I have watched ever since the fellows sarted showing up with gassers and fight their gassors that were magneto types and missing many flying days for this reason I swore when I first started flying gasser which was only about five years ago (yes I waited a long time and was just fine with glow, still am actually) That I would acquire a "Capable big Starter" And am delighted that it works so well with anything. Nope I seldom need it with my two OS gassers but have needed it with some other older engines that I never would have had success without the starter which included the G-62 in my T-6, a Kalt rather vintage engine and a Turnigy 52cc engine.
Even though I am in a wheelchair I have had success with hand starting the OS' but not the magneto engines or the turnigy. So I absolutely carry my big starter when flying my gassers as well many of the others here at my home field. Big starters are hard to come by and can be expensive but so is the equipment you are operating, The proper support equipment is appropriate and never wrong.
John