Hi,
i use them in the ss5 and the ss5.5 and work excellent. I personally try to sink an enemy sub or damaged from the beginning of the battle. After that swift strike I go and finish the damaged sub if did survived the TBs (3-4 TBs can take care ss4s and below, with SS5 and ss5.5 it depends on the ammount of bulge they carry, SD, etc.). With 4 EBVE engineers you will have plenty OH, in the gun-slot I use a rep, so you have a "balanced" crew (OH, rep rate, etc.). YOu should read the IJN sub guide in this section, you will find more interesting info.
Best regards,
Aderezo