I can read but it takes me a while to decipher the actual notes. I can tackle rhythms like no other, though. I've been practicing sightreading a ton lately on guitar and though it's really challenging, I think it's starting to pay off. Guitar is only treble clef, but it's notoriously difficult because on the guitar there are endless different ways to play the same thing and notation gives you no hint of fingerings or position shifts (unless you have a very courteous transcriber). To make matters worse, many jazz chord charts are very ambigious leaving you to come up with specific voicings all on your own. Definitely difficult, but the end result is really really fun.
but BEFORE YOU EVEN START: This is not a debate on whether or not you think knowing music theory or taking lessons makes you a better musician. That is a completely different topic and it's stupid to get on that debate here.
SO, can you read?