Xzins, I think many Calvinists argue that in the 2 Peter 3:9 passage the "usward" is a reference to believers (the elect) and the "any" likewise is a reference to the elect.
The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
His will is accomplished. All [of the elect] do come to repentance.
Steve, the anxiety-ridden God INHERENT if one accepts that calvinist rendering probably means it was intended for a general audience rather than a limited audience. (Not willing that any of the impossible to perish should actually perish?)