Bearable or not? it depends on individual's patience tolerance. Insight3d, crashes a lot for unknown reasons, it doesn't have autosave features. You'd have to manually save it everytime before it would unexpectedly crash. So annoying. But it's very nice program, UI friendly, easy to use.
uhh good luck with that. painting out all the reflections from all photos sounds like a huge task. Plus you´re most likely getting rid of shading and surface details which will falsify your result (as the reflections do).
so far about my theory. Now if you really try it and succeed, please do share your process and result, since this would be kinda cool.
I tried 123d catch for the first time this afternoon. I do not have photos of the car I want to model, so I downloaded about 30 pics from the net. I arranged the photos as if I walked around the car, however, 123d catch rearranged them according to their source - 3 or 4 photos from one website, 1 from another, etc. It did make a 3d image using several photos taken near each other in front of the car, but I was not able to stitch them together with photos taken from the side. I'll try again. I do have a set of photos taken at a concours that I think will work and I'll try them soon. I think this process has an excellent potential.
At Amelia Island Concours, I photographed n Osca MT4, hoping to model it using Insight3D. I took photos, walking around about 60% of it.This morning I loaded it into 123D Catch and tried it, but was unsuccessful at producing a mesh. It is really necessary to make several circuits of the car, photographing from a low angle and a higher angle for this to work properly. In spite of this failure, I think with the correct number pf pics, this could work very well. In the meantime, I look forward to Jpaang's tutorials on IM and Insight 3D.
123D Catch is not a good tool for car modeling...
for some non-reflective objects, which you can take picture of by your self - yes...
but cars using photos from internet - bad idea
IM of IS are the best for this purpose.
I would expect 123D to do a better job if you were able to take pictures of a car with a matte wrap on it (no reflections). This is how 3D scans are done on cars, because the reflections really mess with what the laser picks up in terms of surface distance. The fewer reflections and shadows you get, the better the result would be.