Not only is the field of view of the Bessa-T restricted to something approximating a 300mmm lens, it also doesn't have parallax compensation. Because of the parallax it's also no good as a pointing device, you'd get the subject off-center all the time. But, like Borghesia said, as a rangefinder, it's unbeatable.
On a side note, the focus/frame dance thing described by Gandy may lead you to believe that there's no alternative to riding the focus (in other words micro measuring the focus shot after shot and getting lost in the procedure). I often use the RF on the T in a more liberal way, just like I do with the light meter. I'll set the exposure and focus to somewhere acceptable and from then on just rely on DOF and exposure lattitude until the distances or light really change..