No. Or rather not officially. I know of no 1445 owner that has done it. If you aren't brush hogging, you can use the turf tires which are another 4" or so wider, giving slightly better stability.
I have to say that it does help to be clear on what you will be doing with your tractor. I fence sat between the 1445 and 1845 and came down on the 1445 by giving up my requirement that I be able access 100% of our land and I also focused on my need to clear brush, rather than mow.
One thing I would reiterate is that the slope ratings are not absolute- a slope with an average of 30 degrees will have rocks, and gopher holes that suddenly make it 37 degrees locally, and you also need to bear in mind that when a PT turns the center of gravity moves forward, which can cause tipping ("PT pucker"). This is true for large loads, and for mowing, if you turn across the slope. If you think that you will routinely be mowing 30 degree slopes, especially slopes with no room top or bottom to turn, I would encourage you to go with the slope mower rather than the 1445. The advice is double underlined for wet or slick mowing.
Enjoy your trip to Tazewell; I think you will get a better understanding of the differences between PowerTracs and other tractors, both positives and negatives. Make sure you do a few donuts on the practice slope.
Like Ken, my PT sees a lot of use just because it is so darn handy.
You will be the one using the tractor, and it has to work for you.
All the best,
Peter
They make Duals that could work on a 1445?