I played the Portugeese (1.e4 d5 2.exd5 Nf6 3.d4 Bg4) for a long time but eventually gave it up a few years ago for several reasons. One reason was that White seemed to be doing very well in the critical 4.f3 lines, but the last 1.e4... update shows a new very interesting idea for Black that I quite like. Because of that I've recently been re-investigating the other lines and wanted to see if anyone here had any ideas on them:

The two main issues I have are:
1) 3.d4 Bg4 4.Bb5+ Nbd7 5.Be2 Bxe2 6.Nxe2 (or 6.Qxe2 Nxd5 7.Nf3 e6 8.0-0) 6...Nxd5 7.0-0 e6 8.c4 N5f6 9.Nc3 c6 White seems to have a nice position. I suppose it's nothing too special, but I never feel too comfortable in these Caro-Kann-ish type positions.

2) 3.Nf3 and now 3...Qxd5 4.Nc3 (4.d4 Bg4 is back in the Portugeese) gives a normal Scandinavian after 4...Qa5 or 4...Qd6, or 3...Nxd5 4.d4 when 4...Bg4 or 4...g6 will transpose to the normal 2...Nxd5 lines and 4...Bf5 (which I usually played - and I've noticed GM Laylo also plays) 5.Bd3 Bxd3 6.Qxd3 e6 7.0-0 gives a similiar situation to problem 1.

Do people think Black has good equalising chances in these lines?