I ordered those for use on a solid-body guitar, for which they are not recommended. It's tricky, but it can be done, but the low E-string can snap if you bend it too far. For use on guitars with a top-loader tailpiece they can be used perfectly (I use them on a Telecaster and a Jazzmaster)
That being said. I think there isn't a better set of flatwound strings available at this moment. Polished to a glass-like finish, with a very fundamental, thuddy, punchy sound, without losing articulation or becoming muddy. If you're coming from roundwounds, they will feel quite stiffer than you're used to, but that's something all flatwounds have. Bending is a bit of a challenge with these strings, but it can be done.
If you're into flatwounds, or want to have strings as were used in the 1960's on all guitars, look no further. This set combines all the goodness of the flatwound string paired with a not too high of a tension which allows you to play fluently and without too much effort.