does anyone know if that increases security risk
It certainly does if you're allowing ftp access from the internet. Under any circumstances, I think it's better to avoid write access via ftp if possible.
I use ftp to move stuff around within my network all the time, but my router is blocking access from the net. When I want to move files, I go to the computer that has the files, as root ... move them to /home/ftp/pub (owner=root, mode=755), and kick off vsftpd. Then I go to the PC I want them on, start an ftp client and put them in whatever directory I want. Final step: Shut down both client and server.