Thanks Eddie. That's what I'm doing, and I've been using the Rogozenko book, so I second your advice.
Since one of the objectives of the Pirc is to backdoor into a Sicilian whilst avoiding the Yugoslav Dragon, Black should welcome these variations.
The Vigus book states on p18 that "The starting point of this book is strictly the positon after 1. e4 d6 2. d4 Nf6 3. Nc3 g6." Due to space constraints, and due to this position as really defining what the Pirc is. It's chunky enough as is!
Otherwise the game will transpose into other openings, and so it's necessary to consult other sources. The Pirc player has to be prepared for a lot of variety. That's why I like it
Nigel Davies's DVD on the Pirc also does consider briefly the earlier deviations, with 1. e4 d6 2. f4 d5 leading to a kind of Scandinavian with an extra f4 thrown in, and also 1. e4 d6 2. Nc3 Nf6 3. f4 d5, which is, err, a kind of Alekine with an extra f4 thrown in
So the Pirc player has a choice. That's why I like it
As for 3. Bd3, which is quite popular with lower rated players, heading for a lazy c3 system, 3. ...e5 4. c3 d5 5. de Nxe4 does seem to equalise in a kind of Open Lopez without the Queenside weaknesses kind of way. However a lot of Pirc players will just go 4. ...g6 which is ok for Black - See Tiger's Modern for example.
As for 3. f3, well this is becoming an interesting beast, especially if White has come from 1. d4 d6 2. e4 Nf6 3. f3, and so is probably a d4 player angling for a Saemisch. I've also noticed that Anand uses it when facing Pircmeisters in rapids. But White has to be prepared for a lot of other stuff. I've also noticed a new book, A Positional Opening Repertoire for the Club Player by Nikolai Kalinichenko recommends f3, so maybe it might become more popular with the fish.
I've been going 3. ...d5 4 e5 Nd7, aiming for a French (yay, we get to play everything
), and I've tried 4. ...Nb8 once. Sadly though I seem to keep losing all these game, so I need to find something else, or do more work in it! There's 3. ...e5, recommended in the Exlposive Repetoire, which could lead to an, err, explosive ending. Or, just go 3. ...g6 and get on with it in normal main lines.
I'm sure we'll still get someone asking what to do against 1. e4 d6 2. d3