I had read on another site last season, from a poster who had some inside scoop on the Sox, that the FO was extremely high on Bogaerts, despite his rather disappointing 2014. They saw Bogaerts as the long term SS for years to come. This poster was adamant in his opinion that Bogaerts was untouchable.
Of course, Dombrowski might have a completely different view when it comes to Bogaerts, but I can't imagine that to be the case. I would be very surprised if Bogaerts is traded. I think the Sox have enough other pieces that they could get some good young pitching without trading him. As you alluded to, one of those pieces might be Swihart.