Inverted L does very well on 80 and 40 (will eat any all band vertical on
these bands, other things equal).
On 40 and 80 it is not too difficult to get full size or top hat verticals
operational hence inv L not as popular.
IMHO lots of operators would do better on DX on 80 with an inverted L than
with other popular antennas eg low dipoles.
Barry Kirkwood PhD ZL1DD
Signal Hill Homestay
66 Cory Road
Waiheke Island 1240