What does "working" mean, what issues are you experiencing? DBT has the arcade and vbseo running and the are working well. I dunno if anything was added to the .htaccess to solve any issues between the two.
I fixed the .htaccess code to work with vbseo a couple versions ago. If you installed vbarcade and it isn't working, send me the contents of your .htaccess file and I will let you know if there are any changes that need to be made or if there is a problem we need to investigate.