By many conservatives' standards, I'm a raving hippie liberal.
I don't think it's possible to really be a libertarian without openly and fully supporting equal legal protection for gays.
I'm embarassed to admit I wasn't familiar with Bowers v Hardwick or Lawrence v. Texas. (Except in the vaguest sense, that at some point in my lifetime sodomy laws had been struck down by the Court.)
But, given my very brief read on the 2003 case now, it still appears that while the decision decriminalized "doing gay stuff" it fell well short of granting 'equal protection' to the LGBT class. That's not the same thing as making it illegal for an employer to discriminate against gay people when hiring. Which is consistent with what I believe to be the case today - that sexual orientation is not a protected class the way race is. Unjust as it may be.
For the moment, being gay is like being ugly. Hooters doesn't have to hire you to serve drinks if they think being gay or ugly will scare the customers, because gayness or hideousness aren't protected classes.
Also, as an aside, I see that SCOTUS wimped out on the manner in which they invoked the 14th Amendment in Lawrence v. Texas - via its kludgy "due process" clause, rather than the "privileges or immunities" clause that would've lent more strength to a broader application of the decision. Same thing happened in McDonald - it appears that except for Clarence Thomas, the conservative majority didn't want to go the "privileges or immunities" route in part because doing so would possibly open the door to ... wait for it ... an obligation to support gay marriage.
150+ years since the Slaughter House cases, and that precedent is still screwing liberty at every turn.