No sir, it is not a requirement.
I saw a gain. And it aesthetically looks a lot better.
Remember the orbits are not perfectly spaced. So if you are using a Y adapter and a twin, the reflector will have some edge deflection. Now most will likely argue that it is minor, and I used to agree. But I did see a 20 point gain in the old signal meter when I converted to an I adapter and a DP Single. My 2 cents.
I saw a gain. And it aesthetically looks a lot better.
Remember the orbits are not perfectly spaced. So if you are using a Y adapter and a twin, the reflector will have some edge deflection. Now most will likely argue that it is minor, and I used to agree. But I did see a 20 point gain in the old signal meter when I converted to an I adapter and a DP Single. My 2 cents.