Whether you call yourselves Lean (or Six Sigma or some other facetious productivity name) or not, the reality for many labs these days is that generalists are more and more necessary to keep things going in light of personnel shortages,
We are a 250 bed level 2 trauma hospital, with a fair amount of Lab work on the type of patient population we see, including BB. The only real "dedicated" techs we have are in Micro (and of course, Histology). About a quarter of the techs on first shift are generalists that can work on a regular basis in BB (in addition to the main Lab area). On second and third shift, virtually all of the techs work BB in addition to the main lab area.
Whether one has BB with all dedicated staff or no, the key is to have adequate training and competency, along with extensive references, including having good P&Ps available. This is true for all areas of the Lab (and in health care in general!). It requires a sharp and dedicated management model and staff.
Scott