Next Big Future trawled up yet another fusion/fission hybrid, this time with an MSR. With added function of a final air brayton turbine rather than a steam cycle.http://www.nextbigfuture.com/2017/01/hybrid-fusion-fission-molten-salt.html
An FFH called HMSR, uses what appears to be a single fluid MSR with a shared molten salt blanketed fusor.
There's a dissertation herehttp://trace.tennessee.edu/cgi/viewcontent.cgi?article=3111&context=utk_graddiss
and mostly similar material herehttp://bp.pppl.gov/pub_report/2016/PPPL-5192%20REPORT.pdf
Seems to use the fusor as a neutron source, perhaps similar in function to an ADSR?
Regardless, this sounds like hunting for a use for an existing Tokamak design (Princeton Plasma Physics Lab being the giveaway here), so an MSR was deemed a possible bedfellow...