That used to be the case but not really any more. I know you dont want a rugged/waterproof jobby, but using my Olympus cameras as an example, you can see the screen crystal clear during the day just as well as indoors. Battery life is sufficient that I will fill an 8gb memory card with the 1300 picture capacity before it actually runs out. The only time I have had it run out properly has been when Ive been doing vids of birds in the back garden, but that isnt down to the screen I think, more the rest of the camera recording video when it really isnt a video cam.
If you want to see how the screen looks outside in the sun youre welcome to pop round to have a look if itll help burst that misconception about modern screens