I will set charging voltage limit to 3.65 volts average cell voltage (175.2 v for my 48 cell pack) The Voltblochers should not ever send a HV signal or shunt if the cells stay in balance.
With HVC set at 3.8V I think this will perform as you expect, with the charger just timing out and HVC never triggered, unless a cell significantly drifts. I have not balanced cells for over 20 charge/discharge cycles now, and have not seen significant change in balance. I plan to operate in a similar way using the minibms which should arrive this week. Currently, I have the charger set so it just times out at about 3.42V/cell (Sky Energy cells, so exponential voltage rise with charging time starts at about 3.45V).
My experience is the Manzanita doesn't have a true "constant voltage" mode. It very gradually cuts back current once the timer starts, and voltage continues to rise. How much seems to be determined by how long the timer is set for, what magnitude charge current is used, and possibly how much pack voltage rises with charging time once the timer is triggered. With the timer set for 45 minutes, current cuts back from 30A to about 23A, then shuts off. With the timer set for 2 hours, current remains above 20A most of that time, cutting back very gradually until near the end when it drops more rapidly to around 4A before timing out. But near the end in this case, some cells were on the exponential rise in voltage with time part of the curve, so that is why I say it may depend on voltage increase - that's approximately when the charge current started dropping more rapidly with time.