Now, on the downside, if you run into another player early and they have brought a bonifide battleship it puts you at a disadvantage.
Well, the Evacuator performs pretty well in early one-on-one combat with its nano-disassembler, but frankly, in a one-on-one fight at that early in the game, it will only take about 40 days and 40 nights for anyone to actually DIE otherwise, so you can always just flee while building some frigates to reinforce you. If he gives chase, you'll have sucked him into a trap.
After playing more of the game, I'm even more convinced that scouting in the INITIAL PHASES of the game is completely irrelevant. Instead, my goal is to capture all the immediate surrounding planets as quickly as possible.
Scouting costs $250 and like 10 seconds. It'll take you longer just to build your capship yard and capship.
The first ships I build are colonizers. The number of colonizers I build depends on how many surrounding planets are around my base planet. They need time to build up antimatter, so build these ships first.
The amount of time it would take you to build a scout would get you like 4 or 5 antimatter. The only time I could imagine NOT building at least ONE scout first (and if you're Vasari, your scout is also your extractor flagger), is if my home planet were a one-way dead-end, leaving no choice of which way to invade. Otherwise, at least one, preferrably two, scouts will let you plan that future "sweep" route you're so fond of.
Otherwise you could end up building up this expensive fleet, then warping into a dead end gas cloud, wasting several minutes as you turn around and warp back out.