I installed Dorico first, then Cubase 8 and Absolute 2, and finally Cubase 9 and Absolute 3. HSSE2 is still here and shows in Cubase and Dorico as default player. 
I installed Dorico first, then Cubase 8 and Absolute 2, and finally Cubase 9 and Absolute 3. HSSE2 is still here and shows in Cubase and Dorico as default player.