It's a spear. Unfortunately If I use the 3rd person grip then you can't actually see your hand, only the tip of the spear. So the 1st person grip is actually completely different. Well, that animation fits javelins/spears when held overarm just nicely though arm holding the spear should be more in the back, or you just have high FOV. Seeing spear tip coming from below, when held underarm is perfectly fine too. This vid from Matt Easton about spear and shield might help you finetune animations
Random thought - adding lesser power (on/off like Khajiit night vision or just scripting button) to switch between overarm held and underarm, where you could choose between speed (overarm) or reach (underarm).
