I have bought both this product and the Formula 65 Fretboard kit. As far as conditioning goes, I don't see any reason to use a different product, Lemon Oil does a pretty good job to hydrate the rosewood. Furthermore, to clean the rosewood fretboards beforehand you can use lighter fluid, so no need for additional stuff.
- Easy to apply and you don't need to apply too much of it
- Easy to clean of after use, it's not too oily
- Felt tip only releases oil when applying pressure, which is useful and prevents you from making a mess
- Nice fresh smell on your fretboard
Not really a con, but do not forget to use ONLY on rosewood fretboards. Maple ones will get damaged if you this on them