I presume he's only doing this because he knows it has Republican votes, so he'll use this vote to maintain his "record" of "independence" from (& "fiscal restraint" compared to) the Democrats. Like I've previously pointed out, though, the man has never cast a deciding vote against the Democratic Party line over the course of his nearly 10 years in the Senate. That's just not changing now.
Won't the $2k be part of a larger Democratic stimulus bill though?
Theres a clean house bill that's just for $1400. I assume Schumer will take that up.
Will that get 10 Republican votes?
Reconciliation
We can't waste a reconciliation bill on just the checks. We need the checks, money for states, boosted unemployment insurance, and a lot of more urgent financial relief to avoid a recession.