Bino Vue: 1.25-lb. 2x Amplifier: 0.40-lb.
The 45° angle is very uncomfortable for high angle viewing.
The 45° angle makes it difficult to use with reflectors.
For short focal length scopes such as the Tele Vue-76, Tele Vue-85 and Tele Vue-NP101is, the 2x amplification results in low powers down in the 30x range. Even larger instruments will find the Bino Vue extremely versatile. For example, a 13.5" f/4.5 Dobsonian, would have a low power limit of 96x with a pair of 32mm Plössls.
SCTs have enough focus travel to use Bino Vue without the compensator. For any scope that can accept Bino Vue's 5.1" of path length, you can use Bino Vue without the amplifier assembly.