I have a bow or two on which I can shoot recurve or longbow limbs. IMO, most thee piece risers are better for one or the other and not both.
For example, a number of risers are fairly wide and have a large limb pad angle. I have Morrison ILF riser that fits that description, for example. It works well with recurve limbs, and while I can put longbow limbs on it, and they perform OK, there's too much deflex coming off the riser to suit my tastes for longbow limbs, and the longbow limbs themselves are often made wider than necessary.
On the other hand, my Morrison Shawnee is narrower and has a shallower limb pad angle. It works better for longbow limbs. Limb pad angle is a bit shallow for recurve limbs, and they are generally narrower than standard recurve limbs.
Long story short, if I want a short bow, I use a recurve riser 3-piece. If I want a longbow, I use a longbow riser three-piece. Of course, if cost is an issue, you can make either riser go both ways, but usually giving up a little in looks (IMO) and performance with one set of limbs, depending on the riser.