I personally find it better to promptly transition to looking inside at the PFD but ignoring the flight director. I find this gives a much more accurate guide to your pitch rate and in finding the initial target attitude than looking outside. On larger aircraft pitch rate and attitude are critical to avoid tailscrapes. Once the initial target attitude is reached is the time to transition to the flight director. Some FD's do not command rotation rates and should be ignored initially.
As to roll, then again the PFD is perfectly satisfactory in that respect.