Doesn't seem to be that clumsy. 
use List::MoreUtils qw( natatime );

my $iter = natatime $l, @a;
while (my @row = $iter->()) { push @b, \@row; }

[download]

Update: Switched to using a while loop, since the while statement modifier doesn't work here.

In reply to Re^2: Syntactically cool list of lists by ikegami
in thread Syntactically cool list of lists by jettero

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