I haven't tried it, but the old school theory was dbols were androgenic enough to keep your testosterone levels at a point where it wouldn't negatively effect your sex drive, or ability to get a boner(dbols are of course less androgenic than straight test). They would then stack it with a more anabolic drug like deca, primo, or EQ, which if taken by itself could cause lack of sex drive or boner issues. Sounds good in theory though I don't really know how well it works.
Definitely use the dbols if you can't use injectables, and you want to stay anabolic. 2 weeks off test during a cycle whilst not ideal is not going to leave you with boner/sex problems as long as its a long ester you have been using.
Good point from yogi about the need for extra AI if you up the dose of your last test shot.