Stay vigilant on the nanner front and you should be good imo.
Im new to this, so I still expect some seeds in my harvest, and really have to keep a sharp eye out for any herming.
My only full run had some balls on the lower branches a few weeks into flower, and then nothing for the remainder. Haven't found a seed in that batch yet however.
Sensimilla has only become popular here the last year, and imo just from trying so many strains, seeds doesn't contribute to potency much. Some weeks it's so bombtacular you couldn't help but save the seeds.
My father started growing with me and he has a few seeds per O or so. It's no big deal imo