It's legit interesting to me hearing how people use their Switches. I am almost 100% a docked TV player (it's too small for my hands so I end up clawing and cramping). A lot of the game journalists/enthusiast press I listen to use it primarily in Handheld because they travel a lot. My sister uses both on the regular.
Having all three versions (Handheld only, TV only, maybe a Handheld XL/Pro, and one that can do it all) would probably be a good idea but I always think more than two SKUs is probably confusing the marketplace (even though I guess 3DS, 3DS Lite and New 3DS did it)