Why USB enclosure with HD isn't a block device?

[Yuri]

Olivier Nicole wrote:
> Just a wild guess, but shouldn't you create slices first?
>
> Then create the filesystem on /dev/da0s1
>
> Bests,
>
> Olivier
>   

This as a must in the past.
But now I always format, for example flash disks, without slices. And 
both Windows and FreeBSD have no problem.

And I think /dev/da0 for US enclosure actually should be a block device like all disks.
I think this is a bug.

Yuri