Yes and no. The primary reaction produces three alpha particles with a total of 17.5 MeV of energy, twice as much energy as is produced in the p+B11 reaction. However, deuterium fuses easily with itself (relatively speaking), producing neutrons or tritium in two equally possible reactions. Nevertheless, Wikipedia lists the D+He3 reaction as aneutronic, so by Wikipedia’s standards D+B10 should also count as aneutronic. Of course, even p+B11 produces a small amount of neutrons in side reactions.
Also, if I understand correctly, the D+B10 reaction may occasionally produce C11 and a neutron.
