Is it possible to count all the items that satisfy predicate and the ones that don't in one iteration over the table?

I have a query:

var x = from c in _context
		[...]
		group subResult by subResult.Id into g
		select new 
		{ 
			g.Key,
			Count1 = g.Where(predicate).Count(), 
			Count2 = g.Where(!predicate).Count()
		}

Is it possible to simplify query if predicates used for Count1 and Count2 if g.Count()==Count1 + Count2 so counting isn't done twice and still on server-side?

EDIT: This is what I get

Here's how using Aggregate:

var x =
	from c in _context
	[...]
	group subResult by subResult.Id into g
	let count = g.Aggregate((t: 0, f : 0), (a, x) => predicate(x) ? (a.t + 1, a.f) : (a.t, a.f + 1))
	select new
	{
		g.Key,
		Count1 = count.t,
		Count2 = count.f
	};

You do actually want to know what type g is as if it is a IPartition<T> then Count is O(1) and then Aggregate performs more poorly.