Pruning the tips is exactly similar to pinching. I pinch throughout the season but for now, this is the best time in my cool season zone in Pacific North West to pinch whatever that needs pinching from last year growth. This will allow new growth sufficient time to harden up its wood. Besides, it is much easier to do it without leaves in the way. Also, the winter was mild and last season growth was unaffected. Usually last season tender tips are burnt by the cold but not this winter. If this mild trend continues, it will be a bumper season for brebas. Last year was a good year for me.