I have always used a secondary and batch primed. I've never had any issues... Until recently. My last batch (a red ale) has given me reason to doubt, since when the bottle is poured into a glass, little more than a very few ounces are decanted before an enormous head is produced. Plus the bottle will slowly create its own head making it difficult to wait for the glass to settle.
The dunkle I just bottled had me considering that no priming was necessary, since the (unvented) secondary had plenty of pressure released when opened. I just hated to screw up a good batch by not having the bottles carbonate.
I've put all this off to new water environment with high mineral content & no filtration yet. Probably have whole house filter in place before the next batch...we'll see.