The disadvantages of this approach are:
unlike KeePass or LastPass, Less Pass isn’t able to store notes, links, credit card details or anything else. It’s just a password calculator.
It does not support 2-factor authentication, which means that all the security rests on the strength of your master password. In some situations, you could have a keylogger program on a computer (e.g. a compromised public computer) steal that password.
If you had to change your master password, it would innevitably mean that all your passwords, for all your websites, would have to change. That could be quite tedious to sort out.
If you need to change a password just for one website (e.g. your login for Diaspora), it becomes inconvenient to remember. Less Pass won’t automatically remember that the old password is no longer good. You have to remember to increase a counter from ‘1’ to ‘2’ when generating the Diaspora password.
Password managers like KeePass and LastPass have either good browser integration or well-developed autofill capabilities. (KeePass uses the excellent KeeFox plugin for Firefox.) Less Pass has neither, which means that once your password is generated, you have to copy it to your clipboard and paste it into the login page’s password field. That leaves your password in the clipboard, and a hacker will know to look there if your computer is compromised (or you’re using compromised public computer).


