Let's talk about jewelry on the demo vs jewelry on UOSA. For the sake of testing, I set my magery to 99 on the demo so that my spell casting stat buffs would be +-10 instead of +-11, since UOSA uses these values for spellcasting with GM magery.
Stat Buff Stacking
Firstly, the demo allows stacking of stat buff jewelry and clothing. Adding a piece of stat buff jewelry or clothing applies a +10 stat buff of the relevant stat. Adding another piece of jewelry or clothing to another layer with the same effect gives another +10 stat buff, totalling +20. This can be stacked with as many pieces of jewelry you can find.
This results in a maximum strength and dex level of 180 under the following conditions (assuming I didn't miss any layers that stat buffs appear on):
- 100 base strength
- Greater strength potion +20 = 120
- +10 stat bracelet = 130
- +10 stat necklace = 140
- +10 stat chest piece = 150
- +10 stat hat = 160
- +10 stat pants = 170
- +10 stat earrings = 180
Bless spells vs Bless items
UOSA behaviour:
A bless spell is basically the same thing as a bless item. On UOSA, if I equip a bless item, it will have more or less the same behaviour as casting the bless spell on myself. This means, that as a player, if I curse myself after equipping a bless item, then that spell will be negated by casting curse. Once the item "ticks" again, the bless spell will be reapplied.
This also has the effect that equipping a bless item now means that I can be cursed twice, since my total stat buff is +10 and I can be cursed until I have -10 stats.
Demo Behaviour:
On the demo, a bless item and the bless spell do not interact whatsoever, other than stacking to give +20 total stat buff. Using a bless item is somewhat akin to using a wizard hat - it does not use a spell to apply the effects, and the effect can never be negated by the use of spells (causing the buff to have to reapply itself).