Exactly how it went but the slow swing speed shouldn't be a thing. He is usually a club longer than me. Like I hit my 9i 135 he hits his 145 so not sure why he wouldn't have the swing speed to use long irons.The sucky thing about almost all fittings. They are done with a 7 iron. Most almost never hit long irons. Do you hit the 7 irons relatively good. The set shows up and the person is like “what the hell” I can’t hit this 5 iron I was fit for. Well, you were really fit for a 7 iron and hoped it worked for the whole set.
I am sure some fitters account for this but it can be hard depending on fitting carts and what is available.
I have a solid 10 to 15 yard gap with my long irons up to 5i like 165 7i 175 6i and 190ish 5i.